"It’s nice… how much I like the sound of Studio A. I’ve never heard the Dr. John record sound any better. I love the space of the room, a really nice open feeling. Very comfortable…
"

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Al Schmitt
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Producer | Engineer

"I very much like the sound of these rooms. The imaging is incredibly clear and open.
"

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Eddie Kramer
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Engineer | Producer

"It’s incredible. I can hear every detail and nuance. The clarity and depth are unbelievable! Small room, big room, loud or soft, the imaging and frequency response stays consistent. It’s just fantastic! You really can’t get it until you hear it for yourself.
"

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Ron McMaster
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Sr. Mastering Engineer, Capitol Records

"It’s really detailed and clear with a very wide image for music. The consistency at any volume is quite impressive.
"

"The definition and reality of the sound is simply unbelievable. It’s impressive how you’ve made a glass room in a house sound better than the studio.
"

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Declan Gaffney
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Engineer | Producer

"It’s baffling at first seeing a rectangular room that you can’t hear! Not being able to hear the room is exactly the opposite of what you’d expect to happen. Fantastic imaging and unreal clarity! Well done!
"

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Greg Watkins
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Film Mixer

"Translation is unbelievable! Mind Blowing! I can Mix and Master with one set of acoustics. ZR allows me to hear minute details beyond the threshold of my system and it’s clarity allows for accurate monitoring at any level. It’s so much easier to mix when you can hear Absolutely Everything.
"

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Eric Hart
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Producer | Composer | Musician | Engineer

"ZR Acoustics Embrace our signature series loudspeakers to an unexpected extent. I haven’t heard of this kind of symbiosis from loudspeaker/room interaction over the balance of career. On top of any other accolades, I can also add that ZR Acoustics is also space effiicient and furniture friendly. Fantastic Invention!
"

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Andrew Lipinski
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Founder, Lipinski Sound

"It’s disturbingly cool to hear something sound THAT good.
"

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Ross Hogarth
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Freelance Engineer + Mixer

"There’s no where else in the world I would rather mix than my ZR room.
"

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Mike Shipley
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Mike Shipley Productions

"It sounds exactly the same no matter where you are in the control room! How did you do that?
"

"It’s really amazing how the room just disappears. You hear the music coming out of your speakers (and your amp, and monitor controller and DAC and…). Every nuance, uncluttered by room anomalies…
"

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Ryan Hewitt
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Producer | Engineer | Mixer

"The sound quality and imaging of ZR Acoustic’s Universal Studios was stunning. Playback sounded beautiful. The consistency and fullness of sound around the room was so uniform that it was actually weird. My ears always expect the room to interfere, at least a little bit. I’ve never been in a room that left so little sonic imprint on the playback of music. I closed my eyes and walked slowly around and I couldn’t tell when I was getting closer to the walls. Sound nerd heaven. Delta H installed an array of ZR Micros and a pair of ZR Sample Rate 8 Bits in my own recording and playback space and the change was dramatic. By hanging these products in strategic positions around the spaces, Delta H was able to help me get much more controlled ambience and tone. They’re low profile and they look great. I’m really happy with the results.
"

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Dan Wilson
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Artist | Composer

"Total Clarity of Sound. It’s incredible!
"

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Jamie Hartman
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Executive Producer | Musician

"The presence and intimacy are so accurate while holding a great amount of detail. It’s such a pleasure to hear the intimacy of headphones with the air and space of a room. Mastering B (Universal Mastering Studios) is a perfect match of speakers and room with Andrew Lipinski’s signature towers and the ZR Acoustics® design.
"

"Huge sweet spot and very consistent sound balance in different sized spaces! And passively without electronics! Amazing!!
"

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Carl Beatty
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Chief of Staff, Berklee College of Music

"When we brought DHDI onto our project, our control room was so reverberant that you couldn’t even have a conversation with a person standing two feet away. Now our room has no reflections and is incredibly accurate. They definitely worked miracles!
"

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Billy Klein
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Owner, Hybrid Studios

"Delta H’s design takes the room out of the listening equation. It’s just you, speakers, and music. It allows you to really feel the space in your recordings, and hear every nuance of your mixes. Not to mention that listening to music in a ZR room is just more fun.
"

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Travis Ference
|
The Lab Studios

"ZR could do for studio acoustics what the DAW has done for recording…it’s simple and elegant and it’s real.
My jaw dropped when I heard the playback of the live recording cut right in front of my eyes. Great musicians through Mojave microphones, Burl preamps and converters, in a Delta H Designs pop-up studio made magic tonight.
"

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Alex Oana
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Veteran Audio Engineer | Designer of the Slate Raven

"I love the sound of the rooms. The ZR Acoustics® approach is refreshing and actually is one of the most effective methods I have seen. Thanks for preserving the real estate in the room. We are in the same business and my clients’ rooms are all custom. I am seriously considering using the ZR Acoustics® method for my next project. Nice work Delta H Design team. I’m so tired of people thinking outside the box, you guys just went and built a whole new one. I really believe that this approach is part of the mindset needed to meet the industries’ new requirements in the future.
"

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Dave Hampton
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Studio Designer | Audio Consultant | Writer

"Impressive.
"

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Herb Powers Jr
|
PM Mastering

"Nice Soundstage!
"

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Jeff Greenberg
|
The Village Recorder

"Unbelievable. I shouldn’t be able to mix from the couch at the back of the room.
"

"I visited Peter Doell at Universal Mastering and was quite pleased with how it sounded. I played a few tracks of my own which translated very well. The coolest part was being able to sit in the listening position and then move all the way back to the rear of the room with no shift in the image and no change in the tone.
"

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Paul Wolff
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Audio Design Engineer

"Delta H Design is clearly the company furthest ahead of the curve in it’s field. The sonic balance in the ZR Acoustics® rooms provides ample evidence to that effect.
"

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Stephen Marsh
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Stephen Marsh Mastering

"ZR Acoustics® takes the room out of the equation. It’s a quality listening environment that translates from room to room of any size.
"

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Greg P. Russell
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Re-Recording Engineer

"You nailed it!
"

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Carlos de Andrade
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Producer | Engineer | Mixer

"It’s Amazing! The sweet spot is a huge circle the size of the room. It’s like an aural cloak!
"

"I am really impressed with how the room kind of ‘disappeared’, how the sweet spot follows you where ever you are. What’s even more impressive is that it’s a passive system, no eq, no processing, just the walls and the speakers. It’s pretty cool.
"

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Mark Vordo
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Post Production Music Editor

"The sweet spot is as big as a house! You could drive a truck through it.
"

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Gary Lux
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Producer | Engineer

"This room will make you fall in love with music all over again.
"

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John Jennings
|
VP Sales and Marketing, Royer Labs

"All I hear is the dispersion pattern of the speakers.
"

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Paul West
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Engineer | Executive

"ZR Acoustics® has revolutionized the standard for the BEST Film, Television and Music Recording, Mixing and Mastering environments.
"

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John Myrick
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VP Post Production, Masque Entertainment

"This was the second time I came to Universal Mastering for Studio Prodigy and every time I walked into the room I was Amazed! As a studio owner I hope to one day have a room designed by Hanson Hsu.
"

"When I came to conduct sound testing for transmission loss on the ZR walls with Delta H, I didn’t really expect anything out-of-the-ordinary. However, when I turned the loudspeaker on to record the sound pressure levels, I was astounded at how evenly – distributed the levels were over such a broad frequency spectrum and throughout the entire space. The whole room seemed to equalize the acoustic energy naturally. I was concerned, at first, that I wouldn’t have enough sound energy with my one loudspeaker to conduct a proper test, but the background noise in each room was so low throughout the entire frequency spectrum that our data was unaffected by any exterior noise. The QuietRock 545 THX panels didn’t disappoint either. The combination of the ZR Acoustics® technology with the damped-panel technology of QuietRock surpassed my expectations in every aspect.
"

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Ben Shafer
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Acoustician Serious Materials

"ZR Acoustics® is the acoustic brilliance that will deliver brand recognition to our facility.
"

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Steve Perry
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Owner, Masque Entertainment

"This is the most amazing experience I’ve had in a studio ever. I am shocked at how the balance is steady even when I move around or that I can sit in the back of the room on the couch and it sounds like I’m sitting at the console. (Universal Mastering Studio A)
Congratulations Hanson Hsu, I am very impressed.
"

"This shit is dope. When you put the speakers close to the mojo you get the mojo.
"

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Giovanni Wolfgang
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CEO, ZeusVision

"Playing and using ZR pop up studio felt great right away. The sound was extremely clear and it did not need any getting used to. Achieving good ensemble was easy because no matter what dynamic we played, our instrument’s did not interfere with each other, but instead making adjustments to each member’s articulation and note length was natural.
"

"
To have the sweet spot everywhere, at any level on a mixing stage…what a concept. I couldn’t believe what I was hearing…Truly amazing!! While you’re at it, how about some pop up ADR stages?
"

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Sherry Klein
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Post Production Mixer

"It’s jaw dropping.
"

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Nick Dofflemyer
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Studio Manager, Universal Mastering Studios

"ZR preserves the composer’s intention. It exposes the very nectar of the music
"

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Mark Tschanz
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Composer

"I’m a big fan of the ZR pop-Up Studio. The panels make it possible for any space to be transformed into an actual high quality recording and performance space because the sound of the room and its reflections have been eliminated. I like that when I have asked the performers at your presentation their thoughts they have all said that they can hear themselves and each other so much better than they are used to when they perform in a traditional performance environment where the space itself is also an “instrument” and they must consider its sound in relation to their own. With that removed from the equation the performers can concentrate on their actually performance and tone and hear each other better which results in them performing better as well. Makes my job so much easier when the band or quartet is enjoying how they are sounding, you can hear that positive energy in the recording.
"

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Lenise Bent
|
Sound Engineer, Soundflo Productions

"Speaking directly into the ZR Micro I was astonished by the effect. I have never before experienced a passive absorber with such characteristics. Absorption seemed to rise linearly with frequency, producing a broad, deep HF roll-off with no apparent shelf.
"

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John Hurst
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Co-Founder & CTO, CineCert

"Went to record Cher in a room from hell. Put four or five of Hanson’s panels up and he made me look like a genius. Couldn’t recommend it enough!
"

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Alex Arias
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Recording | Mixing Engineer

"Stunning!
I’ve always wanted to have the ability to record and mix from home. Previously I would only feel confident about prepping the session organizing, editing, timing, and tuning and then traveling to my personal studio to finish mixing. After popping up the DHDI ZR Duet and panels I was floored. They took away the wrongness of the room. The ZR products are amazing! I now feel assured in my home studio mix decisions. The sonic improvement in imaging, tonal balance at any volume, and the control of the low end is stellar. The non-permanent mounting is invaluable to me. Today with ZR products if a client desires to record or mix in a specific location I have the ability to drop in a harmoniously adjusted acoustic space and everyone is smiling.
"

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John Potoker
|
Producer

"I’ve been fascinated by DHDI’s acoustic treatment products since Hanson Hsu’s presentation at AES LA, earlier this fall. Last week’s DHDI Christmas party was my first opportunity to see/hear them in action at Hanson’s living room, which apparently regularly doubles as a concert/recording space, with the addition of several of DHDI’s acoustical treatment screens framing the performers. The evening featured the “Nick Mancini 4-Tet” (vibraphone, sax/flute; double bass; drums) performing original work and being recorded live, on the spot. Maybe it was the top-notch performances, the tasty catering, the open bar, or the overall warmth permeating the event that colored my impressions; but the sound was incredible! … In a room (shape/size/materials) where live music should sound boomy, messy, even intolerable. The closer one would sit to where the “room” mics were positioned the tighter, broader, crisper the sound seemed. The scientist in me wants to doubt the borderline cult claims made about the acoustical treatments’ contribution to the resulting sonic experience. The listener in me had to approach Hanson and his staff after the first set and express my appreciation for the unexpectedly full, tight, clean sound. Maybe one of these days our schedules will align and permit us to devote the time and resources needed to perform the necessary tests, unpack the mystery, and provide valid explanations and terminology to the acoustical treatments’ behavior. In the meantime, I’ll just enjoy their sound.
"

"It was a revelation to play in your ZR Pop-Up Studio. I felt like I had never heard myself before! The sound was absolutely immediate and clear. Thank you for the experience. I wish every string player could have this opportunity!
"

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Virginia Kron
|
Cellist

"Thank you for saving my control room DHDI!! Mixes sounding incredible thanks to you!!
DHDI product behind my Manley Tannoy ML10s and Hot House 165s adds another few harmonics of low end…who needs subs?? You guys are killing it with this stuff. I’m a believer!
As soon as we put all this up I could hear with such precision. Hanson you rock man!!
Loving how these recordings are coming out Hanson!! Thank you thank you!
"

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Matt Linesch
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Producer | Engineer | Mixer | Writer

"I have been working with Hanson and his team for the past three years as they have been designing my audio room in our finished basement. Over this time, they have meticulously designed blueprints for each phase of products that were to go up on the walls and/or ceiling. In addition, Hanson has communicated with me countless times via phone or text messages to help walk me through various aspects of the design and listening sessions. Since I am not a local customer, this has proven invaluable. There is no better way to say that what has occurred in my listening room is nothing short of miraculous. Each new phase of products that have gone up, has clarified something to me: the amount of information found in the music, whether it is CD, SACD, vinyl, etc, has in all cases been hiding from me until these panels were installed. The nuances of the music are being made known each and every day. When I am listening now in my room, everything else in life drifts away and I can focus on the meaning of each musical piece. A close friend who just recently visited and hadn’t heard my system since the first panels went up, came away shaking his head and saying he had never heard anything like it. Now I know why time passes so quickly when I listen with these Delta H Design products.
"